Addition and Subtraction of Decimal Fractions: Solving the problem

Solve the following exercise and circle the appropriate answer:

Let's solve the exercise in order:

We'll subtract the tenths after the decimal point:

$1-0=1$

Finally, we'll subtract the whole numbers before the decimal point accordingly:

$2-2=0$

$2-1=1$

And we get:

$22.1\\-12.0\\10.1$

10.1

Solve the following exercise and circle the appropriate answer:

Let's solve the exercise in order:

We'll subtract the hundredths after the decimal point:

$9-3=6$

We'll subtract the tenths after the decimal point:

$2-1=1$

Finally, we'll subtract the whole numbers before the decimal point accordingly:

$3-2=1$

$1-1=0$

And we'll get:

$13.29\\-12.13\\01.16$

1.16

Solve the following exercise and circle the appropriate answer:

Let's solve the exercise in order:

We'll add up the hundredths after the decimal point:

$8+1=9$

We'll add up the tenths after the decimal point:

$3+4=7$

Finally, we'll add up the whole numbers before the decimal point accordingly:

$1+3=4$

$2+1=3$

And we get:

$21.38\\+13.41\\34.79$

34.79

Solve the following exercise and circle the appropriate answer:

Let's solve the exercise in order:

We'll add up the thousandths after the decimal point:

$2+3=5$

We'll add up the hundredths after the decimal point:

$1+1=2$

We'll add up the tenths after the decimal point:

$5+3=8$

Finally, we'll subtract the whole numbers before the decimal point:

$3+4=7$

And we get:

$3.512\\+4.313\\7.825$

7.825

Solve the following exercise and circle the appropriate answer:

Let's solve the exercise in order:

We'll subtract the hundreds after the decimal point:

$0-0=0$

We'll subtract the tenths after the decimal point:

$1-1=0$

Finally, we'll subtract the whole numbers before the decimal point accordingly:

$3-1=2$

$3-1=2$

And we get:

$33.10\\-11.10\\22.00$

Since there are only zeros after the decimal point, we can ignore them and we actually got the number: 22

22

$0.61+0.20=$

$0.81$

Solve the following exercise and circle the appropriate answer:

3.89

Solve the following exercise and circle the appropriate answer:

0.74

Solve the following exercise and circle the appropriate answer:

2.94

Solve the following exercise and circle the appropriate answer:

8.89

Solve the following exercise and circle the appropriate answer:

1.29

Solve the following exercise and circle the appropriate answer:

738.721

Solve the following exercise and circle the appropriate answer:

41.31

Solve the following exercise and circle the appropriate answer:

443.722

Solve the following exercise and circle the appropriate answer:

531.401

Solve the following exercise and circle the appropriate answer:

69.132

Circle the correct answer to the following exercise:

0.682

Circle the correct answer to the following exercise:

63.787

Circle the correct answer to the following exercise:

199.648

Circle the correct answer to the following exercise:

1.69